JP2013129971A - Curtain wall style exterior wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curtain wall style exterior wall structure capable of reducing the sectional shapes of the frames of an exterior wall panel.SOLUTION: In a curtain wall style exterior wall structure 1, an exterior wall panel 2 is suspended on the outdoor side of a structure skeleton which is constructed by columns and beams 4, 5. The exterior wall panel 2 has vertical frames 6 and horizontal frames 7 facing each other to construct a frame body, and the vertical frames 6 are suspended on the columns 4 by exterior wall panel supporting members 3, respectively. An exterior wall panel 1 is suspended on the columns 4 in the vertical direction by at least two exterior wall panel supporting members 3. Desirably, the exterior wall panel supporting member 3 at the lowermost end transmits the vertical load of the exterior wall panel 2 to the columns, and the remaining exterior wall panel supporting member 3 does not transmit the vertical load of the exterior wall panel 1 to the columns.

Description

  The present invention relates to a curtain wall type outer wall structure in which an outer wall panel is fixed in a curtain wall type to a structural frame composed of column beams of a building.

  Conventionally, in the curtain wall type outer wall structure, the outer wall panel is fixed to the structural frame composed of column beams by fixing the upper end portion and the lower end portion of the outer wall panel to the beam through hardware.

  In this curtain wall type outer wall structure, when the frame is deformed between layers due to an earthquake, etc., the outer wall panel rotates using vertical and horizontal clears provided on the hardware, so that the deformation of the outer wall panel itself is suppressed and damaged. It has a structure that avoids.

Japanese Patent Laid-Open No. 10-072886

  However, since the wind pressure applied to the outer wall panel is entirely borne by the frame that is the structural material of the outer wall panel, the distance between the beams provided at each level is separated, so the section of the vertical frame in the height direction is increased. There was a problem that the cost of the frame member would increase. Furthermore, since the outer peripheral dimension of the building is increased by increasing the cross section of the frame, there is a problem in terms of site correspondence.

  On the other hand, there has also been proposed an outer wall structure in which the outer wall panel is placed inside a structural frame made of column beams and the frame of the outer wall panel is fixed to the column beam. In some cases, the outer wall panel may be damaged. In addition, since the panel height is limited, there are many restrictions on the plan, and it is difficult to remove the outer wall panel during renovation.

  In view of the above problems, an object of the present invention is to provide a curtain wall type outer wall structure capable of reducing the cross-sectional shape of the frame of the outer wall panel.

  The above-mentioned problem is a curtain wall type outer wall structure in which an outer wall panel is suspended on the outdoor side of a structural frame composed of column beams, and the outer wall panel is composed of a vertical frame and a horizontal frame, respectively. This is solved by the outer wall structure characterized in that the vertical frames are suspended from the pillars of the structural frame by outer wall panel supports.

  In this outer wall structure, the outer wall panel is realized in the form of a curtain wall, attached to the structural frame composed of column beams, and the vertical frame of the outer wall panel is suspended on the column of the structural frame by the outer wall panel support material. Therefore, even if it is a curtain wall type outer wall structure that bears all the wind pressure with the outer wall panel frame, compared with the case where the outer wall panel is installed between the beams that are spaced apart due to the height of the building floor, The rigidity of the outer wall panel frame attached between the columns may be small, and the cross-sectional dimension of the outer wall panel frame can be set small. And since the cross-sectional dimension of the outer wall panel frame can be reduced, it is possible to design economically, as well as to reduce the space of the frame material and to secure the space for filling the heat insulating material. .

  In the outer wall structure, the outer wall panel is suspended by at least two or more outer wall panel support members in the vertical direction with respect to the pillar of the structural frame, and the outermost wall panel support member at the lowermost end uses the vertical load of the outer wall panel as a column. It is preferable that the remaining outer wall panel support member has an outer wall structure that does not transmit the vertical load of the outer wall panel to the column.

  The outer wall panel is suspended by at least two or more outer wall panel support members in the vertical direction with respect to the column of the structural frame, and only the lowermost outer wall panel support member transmits the vertical load of the outer wall panel to the column. Therefore, the axial load on the column is limited because the portion of the column of the structural frame where the axial force is applied is limited to the range where the outer wall panel support material at the lowest end is suspended from the lower end of the column. On the other hand, since the load bearing range of the column is limited to the lower part, the buckling strength of the column can be increased, the sectional shape of the column can be reduced, and an economical design can be performed.

  Moreover, since the outer wall panel is partially supported by the outer wall panel support material, the thermal bridge can be reduced, and further, a heat insulating layer is provided outside the structural frame, and the heat insulating layers of the respective outer wall panels are made continuous. Thus, the heat insulation performance can be improved.

  In particular, the outermost panel support member at the lowermost end is preferably attached to a position of 1/4 or less of the total length of the column from the lower end of the column of the structural frame.

  The buckling strength of the column can be further improved by attaching the outermost panel support member at the lowermost end to a position of 1/4 or less of the total length of the column from the lower end of the column of the structural frame.

  Since the present invention is as described above, it is possible to provide a curtain wall type outer wall structure capable of reducing the cross-sectional shape of the frame of the outer wall panel.

FIG. 1 (a) is a cross-sectional plan view showing the outer wall structure according to the first embodiment of the present invention. FIG. 2 (b) is a cross-sectional side view taken along line AA of FIG. ) Is a partially enlarged side view of FIG. FIG. 1 (a) is a front view showing an outer wall structure composed of a column beam to which an outer wall panel is attached, and FIG. 2 (b) is a sectional view taken along line BB of FIG. FIG. 1 (a) is a partially enlarged perspective view showing an attachment state of the outer wall panel to the structural housing, and FIG. 2 (b) is a cross-sectional plan view showing a column of the structural housing. It is a cross-sectional top view which shows the attachment condition of an adjacent outer wall panel. Fig. (A) is a cross-sectional front view showing the state of attachment of the outer wall panel support material to the outer wall panel locking body other than the lowermost end, and Fig. (B) is the outer wall panel support material to the lowermost outer wall panel locking body. It is a cross-sectional front view which shows the attachment condition. It is a partial cross section side view which shows the transmission condition of the load from an outer wall panel to the pillar of a structural frame. It is a cross-sectional top view which shows the 2nd Embodiment of this invention.

  Next, embodiments of the present invention will be described with reference to the drawings.

  In the outer wall structure 1 according to the first embodiment of the present invention shown in FIGS. 1 and 2, 2 is an outer wall panel, 3 is an outer wall panel support member, 4 is a pillar of the structural housing, and 5 is a beam of the structural housing.

  As shown in FIG. 2, the outer wall panel 2 is provided on the outdoor side of a structural frame composed of columns 4 and 4 arranged in the vertical direction on the left and right sides and beams 5 and 5 arranged in the horizontal direction on the upper and lower sides. Suspended in curtain wall form. Here, the upper and lower beams 5 and 5 are made of H-shaped steel made of a web connecting the upper flange, the lower flange, and the upper and lower flanges, and the left and right columns 4 and 4 are made of C-shaped steel. The shape of the beam is not limited, and the lower beam may be a concrete foundation.

  The outer wall panel 2 is an outer wall panel frame in which a frame body is constituted by left and right vertical frames 6 and 6 made of channel steel composed of a web connecting flanges and upper and lower horizontal frames 7 and 7 also made of channel steel. On one side, a plate-like outer heat insulating material 8 made of urethane foam, a base frame 9 extending in the vertical direction disposed at the end of the outer heat insulating material, and the outer heat insulating material 8 and the base frame 9 are interposed. The outer wall surface material 10 is fixed to the outer wall panel frame. Reference numeral 11 denotes a ventilation layer extending in the vertical direction, which is constituted by the outer heat insulating material 8, the base bar 9, and the outer wall surface material 11. Further, 12 is a fiber-based heat insulating material filled in the outer wall panel frame, and 13 is a moisture-permeable waterproof sheet for holding the fiber heat insulating material 12 in the outer wall panel frame.

  As shown in FIGS. 1 (b) and 3 (b), the web 6a of the vertical frame 6 is provided with holes 14 for fixing the outer wall panel support material 3 at predetermined intervals, and the inner side 6b of the vertical frame. A nut 15 is attached so as to be concentric with the hole 14.

  As shown in FIG. 1 and FIG. 3A, the outer wall panel support 3 is a column side abutting portion 3 a that abuts against a side surface in the wall surface direction of the column 4 and a side surface that is a web portion of the vertical frame 6 of the outer wall panel 2. The outer wall panel abutting portion 3b that abuts with the column side surface abutting portion 3a and the outer wall panel abutting portion 3b are connected to both the indoor and outdoor side surfaces of the column 4 and the side surface that is the flange portion of the vertical frame 6. It is a support member having a substantially Z-shaped cross section, which is composed of a connecting portion 3c that abuts.

  The outer wall panel abutting portion 3b of the outer wall panel support member 3 is provided with a hole 3d through which the shaft portion 16b of the countersunk bolt 16 is inserted and engaged with the head portion 16a. The hole 14 and the nut provided in the vertical frame 6 The outer wall panel support 3 is fixed to the vertical frame 6 of the outer wall panel 2 by fixing the countersunk bolt 15 to the outer wall panel support 3.

  As shown in FIG. 4, the adjacent outer wall panels 2 and 2 are connected to each other through the outer wall panel support members 3 and 3 fixed to the vertical frames 6 and 6, respectively. In other words, between the vertical frames 6 and 6 of the outer wall panels 2 and 2, the outer wall panel abutting portions 3 b of the outer wall panel support members 3 and 3 are fixed to the vertical frames 6 and 6. Since it is ensured by the thickness of 3b, the head 16a of the countersunk bolt 16 that fixes the outer wall panel support member 3 to the vertical frame 6 does not protrude out of the surface of the outer wall panel support member 3, and fits within the plate thickness. As described above, the hole 3d through which the countersunk bolt 16 is inserted is tapered according to the head 16a of the countersunk bolt 16.

  On the other hand, the column side abutting portion 3 a of the outer wall panel support 3 is provided with a notch 3 e for engaging with the outer wall panel locking body 17 fixed to the column 4.

  As shown in FIG. 3 (b), the outer wall panel locking body 17 includes a long bolt 17 a as a main body portion that is passed through holes 4 a and 4 a provided on opposite side surfaces of the column 4, and both sides of the column 4. It consists of nuts 17b and 17b fixed to long bolts 17a protruding from the surface. On the surface of the nut 17b on the column 4 side, a taper 17c is provided for guiding the locking of the notch 3e of the column side contact portion 3a of the outer wall panel support member 3. In addition, 18 is interposed between the pillar 4 and the outer wall panel support material 3, and prevents the vibration of the pillar 4 as a vibration countermeasure and prevents the rubbing sound between the pillar 4 and the outer wall panel support material 3 during an earthquake. This is a vibration spacer.

  As shown in FIG. 1 and FIG. 3, the outer wall panel 2 is detachably suspended from the pillar 4 via the outer wall panel support member 3..., And here, four outer wall panels are spaced apart in the vertical direction. It is locked by the support material 3. Of the four outer wall panel supporting members 3..., The other outer wall panel supporting members 3 except the lowermost outer wall panel supporting member 3 are arranged in the horizontal direction with respect to the outer wall panel locking body 17 fixed to the column 4. While the displacement is restricted, the load on the outer wall panel 2 is not transmitted to the pillar 4 via the outer wall panel support 3. Here, as shown in FIGS. 1 (c) and 5 (a), the width of the notch 3 e provided in the column side surface abutting portion 3 a of the outer wall panel support member 3 is the main body of the outer wall panel locking body 17. The depth of the notch 3e is adjusted so that the gap is small when the lowermost outer wall panel support member 3 is supported by the lowermost outer wall panel locking body 17. It is set to be possible.

  On the other hand, among the four outer wall panel supporting members 3..., The lowermost outer wall panel supporting member 3 is restricted from being displaced in the horizontal direction with respect to the outer wall panel locking body 17 fixed to the column 4. The load of the panel 2 is transmitted to the pillar 4 via the outer wall panel support 3. Here, as shown in FIG. 1 (D) and FIG. 5 (B), the width of the notch 3e provided in the column side contact portion 3a of the outer wall panel support member 3 is the main body of the outer wall panel locking body 17. The depth dimension of the notch 3e is adjusted to the diameter of the long bolt 17a as a portion, and the outer wall panel locking body through the notch 3e when the outer wall panel support 3 is supported by the outer wall panel locking body 17 17 is set to transmit the load.

  Here, the outermost panel support member 3 at the lowermost end is attached to a position of 1/4 or less of the total length of the column 4 from the lower end of the column 4.

  In the curtain wall type outer wall structure 1, as shown in FIG. 6, for example, against a horizontal load such as wind pressure applied to the outer wall panel 2, a pillar 4 that is a structural frame via an outer wall panel support 3. However, the vertical load of the outer wall panel 2 is transmitted to the column 4 only through the outermost wall panel support 3 at the lowermost end.

  In this outer wall structure, the outer wall panel is realized in the form of a curtain wall, attached to the structural frame composed of column beams, and the vertical frame of the outer wall panel is suspended on the column of the structural frame by the outer wall panel support material. Therefore, even if it is a curtain wall type outer wall structure that bears all the wind pressure with the outer wall panel frame, compared with the case where the outer wall panel is installed between the beams that are spaced apart due to the height of the building floor, The rigidity of the outer wall panel frame attached between the columns may be small, and the cross-sectional dimension of the outer wall panel frame can be set small. And since the cross-sectional dimension of the outer wall panel frame can be reduced, it is possible to design economically, as well as to reduce the space of the frame material and to secure the space for filling the heat insulating material. .

  In addition, since the outer wall panel is simply suspended from the pillar by the outer wall panel support material, only the outer wall panel can be easily removed even after the building is completed, and it can be flexibly adapted during renovation and repair. .

  In addition, the outer wall panel is suspended by at least two outer wall panel support members in the vertical direction with respect to the column of the structural frame, and the vertical load of the outer wall panel is used only for the outer wall panel support member at the lowest end. Since the portion of the structural frame column where the axial force is applied is limited to the range in which the outermost panel support material at the lowest end is suspended from the lower end of the column, the axial direction applied to the column Since the load bearing range of the column is limited to the lower part with respect to the load, the buckling strength of the column can be increased, the sectional shape of the column can be reduced, and an economical design can be performed.

  Moreover, since the outer wall panel is partially supported by the outer wall panel support material, the thermal bridge can be reduced, and further, a heat insulating layer is provided outside the structural frame, and the heat insulating layers of the respective outer wall panels are made continuous. Thus, the heat insulation performance can be improved.

  Furthermore, the buckling proof strength of the column can be further improved by attaching the outermost panel support member at the lowermost end to the position of 1/4 or less of the total length of the column from the lower end of the column of the structural frame.

  In FIG. 7, the outer wall structure 31 which is the 2nd Embodiment of this invention is shown. Note that the same constituent elements as those in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

  This outer wall structure 31 has an overhanging outer wall structure in which only some of the adjacent outer wall panels 32 protrude from the wall surface to the outdoor side.

  By simply changing the dimensions of the column side contact portions 33a of the outer wall panel support members 33 and 33 that support the projecting outer wall panel 32 in accordance with the projecting dimensions of the outer wall panel 32, a projecting outer wall structure is obtained. be able to. In addition, 34 is a corner cover material which connects the outer wall panel 2 of the general part of the outer wall panel 32 of an overhang | projection part.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, the outer wall panel support member has been shown as a support member having a substantially Z-shaped cross section including a column side contact portion, an outer wall panel contact portion, and a connecting portion. There may be any shape.

  Moreover, there is no restriction | limiting also about the attachment method of an outer wall panel support material and a pillar, Arbitrary methods may be selected in the range in which the vertical load of an outer wall panel is transmitted to a pillar only by the outer wall panel support material of the lowest end.

  Moreover, in the said embodiment, although shown about the case of an external heat insulation ventilation outer wall as an outer wall panel, there is no restriction | limiting in the structure of an outer wall panel, and it cannot be overemphasized that arbitrary structures may be selected.

  Further, in the above-described embodiment, the case where the adjacent outer wall panels are arranged in such a manner that the respective vertical frames are arranged in contact with each other via the outer wall panel support members fixed to the vertical frames is described. It is not necessary to secure the interval between the vertical frames by the thickness of the outer wall panel support member fixed to each vertical frame, and the outer wall panel support member fixed to each vertical frame at the interval of the vertical frame of the outer wall panel. Needless to say, a state in which a gap other than the plate thickness is provided may be used. In this case, the countersunk bolt does not necessarily need to be within the thickness of the outer wall panel support material, and may protrude from the thickness of the outer wall panel support material as long as it does not affect the spacing between adjacent outer wall panels. Good.

DESCRIPTION OF SYMBOLS 1,31 ... Outer wall structure 2,32 ... Outer wall panel 3,33 ... Outer wall panel support material 4 ... Column (structure housing)
5 ... Beam (Structural frame)
6 ... Vertical frame (outer wall panel)
7 ... Horizontal frame (outer wall panel)
8 ... Outer insulation material 9 ... Base rail 14 ... Hole (outer wall panel)
15 ... Nut (outer wall panel)
16 ... flat head bolt 17 ... outer wall panel locking body

Claims (3)

A curtain wall type outer wall structure in which an outer wall panel is suspended on the outdoor side of a structural frame composed of column beams,
The outer wall panel has a frame body composed of a vertical frame and a horizontal frame, respectively,
An outer wall structure characterized in that each of the vertical frames is suspended from a column of a structural frame by an outer wall panel support material. The outer wall panel is suspended by at least two or more outer wall panel support members in the vertical direction with respect to the pillar of the structural frame,
The outer wall structure according to claim 1, wherein the lowermost outer wall panel support member transmits a vertical load of the outer wall panel to the column, and the remaining outer wall panel support members do not transmit the vertical load of the outer wall panel to the column.   The outer wall structure according to claim 2, wherein the lowermost outer wall panel support member is attached to a position equal to or less than ¼ of the total length of the column from the lower end of the column of the structural frame.

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